Fig. 4

Microbial composition metrics of bacterial (16S rRNA gene), fungal (ITS), and Glomeromycota (18S rRNA gene) communities across the root and rhizosphere compartments in untreated, mycorrhized (Myc), bacterized (Bac), and mycorrhized-bacterized (Myc + Bac) samples. (A) Relative abundances, (B) Chao1 richness, (C) Simpson’s diversity Index, and (D) NMDS based on Bray-Curtis dissimilarities with the associated ANOVA and PERMANOVA (perm = 999) tests. ANOVA and PERMANOVA tests are displayed with treatment (= T) and compartment (= C) effects. Different letters indicate that the groups have a mean difference that is statistically significant (P < 0.05).